Spire.Presentation for .NET 是專業的 PowerPoint組件，開發者可以在 .NET 平臺上對 PPT文檔進行生成、修改、轉換和打印等操作，而無需安裝 Microsoft PowerPoint。

本文將詳細介紹如何使用C# 、VB.NET給PowerPoint文檔添加多行多列文本水印。可點擊此處下載最新版測試。

C#

using Spire.Presentation;
using Spire.Presentation.Drawing;
using System;
using System.Drawing;
using System.Windows.Forms;

namespace WatermarkDemo
{
    class Program
    {
        static void Main(string[] args)
        {
            //加載示例文檔
            Presentation presentation = new Presentation();
            presentation.LoadFromFile("Sample.pptx");

            //獲取文本的大小
            Font font = new Font("宋體", 20);
            String watermarkText = "冰藍科技";
            SizeF size = TextRenderer.MeasureText("E-iceblue", font);
            float x = 30;
            float y = 80;
            for (int i = 0; i < 3; i++) { for (int j = 0; j < 3; j++) { //繪制文本，設置文本格式并將其添加到第一張幻燈片 RectangleF rect = new RectangleF(x, y, size.Width, size.Height); IAutoShape shape = presentation.Slides[0].Shapes.AppendShape(Spire.Presentation.ShapeType.Rectangle, rect); shape.Fill.FillType = FillFormatType.None; shape.ShapeStyle.LineColor.Color = Color.White; shape.Rotation = -45; shape.Locking.SelectionProtection = true; shape.Line.FillType = FillFormatType.None; shape.TextFrame.Text = watermarkText; TextRange textRange = shape.TextFrame.TextRange; textRange.Fill.FillType = FillFormatType.Solid; textRange.Fill.SolidColor.Color = Color.FromArgb(120, Color.HotPink); textRange.EastAsianFont = new TextFont(font.Name); textRange.FontHeight = font.Size; x += (100 + size.Width); } x = 30; y += (100 + size.Height); } //保存文檔 presentation.SaveToFile("Watermark_result.pptx", FileFormat.Pptx2010); } } }

VB.NET

Imports Spire.Presentation
Imports Spire.Presentation.Drawing
Imports System
Imports System.Drawing
Imports System.Windows.Forms

Namespace WatermarkDemo
    
    Class Program
        
        Private Shared Sub Main(ByVal args() As String)
            '加載示例文檔
            Dim presentation As Presentation = New Presentation
            presentation.LoadFromFile("Sample.pptx")
            '獲取文本大小
            Dim font As Font = New Font("宋體", 20)
            Dim watermarkText As String = "冰藍科技"
            Dim size As SizeF = TextRenderer.MeasureText("E-iceblue", font)
            Dim x As Single = 30
            Dim y As Single = 80
            Dim i As Integer = 0
            Do While (i < 3) Dim j As Integer = 0 Do While (j < 3) '繪制文本，設置文本格式并將其添加到第一張幻燈片 Dim rect As RectangleF = New RectangleF(x, y, size.Width, size.Height) Dim shape As IAutoShape = presentation.Slides(0).Shapes.AppendShape(Spire.Presentation.ShapeType.Rectangle, rect) shape.Fill.FillType = FillFormatType.None shape.ShapeStyle.LineColor.Color = Color.White shape.Rotation = -45 shape.Locking.SelectionProtection = true shape.Line.FillType = FillFormatType.None shape.TextFrame.Text = watermarkText Dim textRange As TextRange = shape.TextFrame.TextRange textRange.Fill.FillType = FillFormatType.Solid textRange.Fill.SolidColor.Color = Color.FromArgb(120, Color.HotPink) textRange.EastAsianFont = New TextFont(font.Name) textRange.FontHeight = font.Size x = (x + (100 + size.Width)) j = (j + 1) Loop x = 30 y = (y + (100 + size.Height)) i = (i + 1) Loop '保存文檔 presentation.SaveToFile("Watermark_result.pptx", FileFormat.Pptx2010) End Sub End Class End Namespace

效果圖：